Can I get rid of this fog when underground?

[sinders]

I've built an entirely underground part of a roller coaster and there is this blue/white fog which is stopping from seeing far in the underground. When riding the coaster it just makes look ugly and I was wondering if you can or how I would get rid of it so it's just completely dark or that's it's reduced or something. Is it something to do with draw distance? I couldn't find anyone else having a problem with it but it's kind of annoying me so I would like to know if I can get rid of it.

Here's a picture of what it looks like:

 

[breezerHOG1]

Thats light pollution, only way to eliminate is to set time to night

 

[Renaleteto]

By the way, I think that shot looks so cool! In fact I love that fog effect [big grin]

 

[raXma]

You can put some lights around and the fog will dissapear. I think (ive never tried) you can put some black lights, that could work if you want it to be a dark place, but never tried.